I've decided on May 9th (had the most votes, and the least impact to those who are interested but also going to Denver). I've updated the original post to reflect things. Any comments or suggestions, please fire away.

Any thoughts on when the meet tour will wrap up? One option for me is to cross into Quebec after the meet and stay overnight in Sherbrooke before continuing my journey. But I want to allow ample time for the border crossing, given my history as a magnet for vehicle searches.

When we wrap up depends heavily on what and how many optional trips we take. We could realistically do all 5 covered bridges in just over an hour, especially if we begin the meet next to one.

I wouldn't worry about the border crossing. It's only 80 miles from Lyndonville to Sherbrooke, and it's all Interstate/Autoroute. Even if you get delayed an hour at the border, you'll be in Sherbrooke in less than 2.5 hours.

I'd already inquired with Burke about the toll road, but they have no idea when they'll be able to get it open. Best guess right now is late May. The snows we've had overnights this week haven't helped any (they had 3" last night).

Yes, the weather looks quite summery, so I am happy to go and be able to leave my boots at home. The trip up will give me a chance to clinch I-93 in NH and VT (and therefore in its entirety) as well as document the progress of sign replacement projects along I-95/MA 128.

This first one is at the north end of the Millers Run Bridge in Lyndonville, on Center Street just south of the park-and-ride off VT 122. This bridge is open to auto traffic; some of the others we visited are pedestrian-only. From left to right: Doug Kerr (NY), Valerie Deane (NY), Bob Malme (MA), Adam Froehlig (VT - meet host), Oscar Voss (VA).

Here we are, on a side trip after our covered bridges tour, on the beach at the north end of Lake Willoughby near the junction of VT 5A and VT 16 about 20 miles north of Lyndonville.